Registration Dossier
Registration Dossier
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EC number: 283-952-1 | CAS number: 84776-27-2 Extractives and their physically modified derivatives such as tinctures, concretes, absolutes, essential oils, oleoresins, terpenes, terpene-free fractions, distillates, residues, etc., obtained from Cinchona officinalis, Rubiaceae.
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
The estimation by calculation for the vapour pressure of read across substance quinine is 1.27E-008 Pa.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
The estimated values for the vapour pressure of the read across substance quinine calculated by using the Antoine method, Modified Grain method and Mackay method differ in a range of > 4.9E-010 Pa and < 2.8E-006 Pa. All used models are calculated for an ambient temperature of 25 °C. From the model predictions, the Modified Grain method is selected to provide an appropriate value for the vapour pressure. The estimated value by the Modified Grain method is 1.27E-008 Pa. Thus, we consider the predicted value of 1.27E-008 Pa to provide an approximation of the vapour pressure of the read across substance quinine. We conclude that totaquina, which consists of 75% quinine, has a similar vapour pressure.
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